SSRN Author: Hakan DenizHakan Deniz SSRN Contenthttps://www.ssrn.com/author=3615413
https://www.ssrn.com/rss/en-usWed, 17 Jul 2019 01:03:13 GMTeditor@ssrn.com (Editor)Wed, 17 Jul 2019 01:03:13 GMTwebmaster@ssrn.com (WebMaster)SSRN RSS Generator 1.0New: Optimization of Catalytic Active Sites in Noncollinear Antiferromagnetic Mn₃Pt Bulk Single-CrystalElectrons in non-collinear antiferromagnets exhibit abundant transfer properties of interest to next-generation innovative devices. As two of the most important properties of electrons, both charge and spin must be simultaneously transferred. This will certainly influence many surface reaction processes like the hydrogen evolution reaction (HER). We grow a Mn₃Pt bulk single-crystal that having a room-temperature long-range magnetic order at the Mn sites, which showed Pt-like activity, and excellent stability as a catalyst for HER. Experiments and density-functional-theory calculations reveal that the electronic structure can be modified owing to the spin polarization of the Mn atoms. This further affects the adsorption energy of the reaction intermediate by tailoring the arrangement and filling of d-electrons. With this strategy, a similar Gibbs free energy for hydrogen adsorption was obtained between Mn-Mn hollow sites and Pt sites. In other words, more actives sites beyond Pt are ... https://www.ssrn.com/abstract=3420373
https://www.ssrn.com/1807490.htmlTue, 16 Jul 2019 13:43:56 GMT